【正文】 ... 6 編制產(chǎn)品大綱的原則 ......................................................................................... 6 產(chǎn)品方案的主要內(nèi)容 ......................................................................................... 6 產(chǎn)品大綱 ............................................................................................................. 6 坯料選擇 ........................................................................................................................ 6 連鑄坯的特點(diǎn) ...................................................................................................... 6 鋼坯的特點(diǎn) .......................................................................................................... 7 小鋼錠的特點(diǎn) ...................................................................................................... 7 坯料選用時(shí)所考慮的因素 .......................................................................................... 7 坯料形狀尺寸 ..................................................................................................... 7 鋼坯規(guī)格及允許偏差 .......................................................................................... 8 3 軋機(jī)的選擇 ............................................................................................................................. 9 軋機(jī)型式對(duì)比與選擇 .................................................................................................... 9 開(kāi)式機(jī)架 ............................................................................................................. 9 閉式機(jī)架 ............................................................................................................. 9 半閉口機(jī)架 .......................................................................................................... 9 河北理工大學(xué) 畢業(yè)設(shè)計(jì)說(shuō)明書 目錄 III 短應(yīng)力線軋機(jī) ..................................................................................................... 9 平立可轉(zhuǎn)換軋機(jī) ............................................................................................... 10 軋機(jī)布置選擇比較 ...................................................................................................... 11 橫列式布置軋機(jī) ............................................................................................... 12 連續(xù)式布置的軋機(jī) ........................................................................................... 12 棒材軋制工藝流程 ...................................................................................................... 13 石鋼棒材車間 ................................................................................................... 13 廣鋼棒材車間 ................................................................................................... 13 生產(chǎn)工藝特點(diǎn) ................................................................................................... 14 軋機(jī)機(jī)架數(shù)確定 .......................................................................................................... 15 軋輥的各個(gè)參數(shù) .......................................................................................................... 16 軋輥的材質(zhì)選 擇 ............................................................................................... 16 軋輥直徑 ........................................................................................................... 16 輥身長(zhǎng)度 ........................................................................................................... 17 軋輥軸承 ........................................................................................................... 17 軋輥的調(diào)整機(jī)構(gòu) ............................................................................................... 17 4 孔型系統(tǒng)選擇與設(shè)計(jì) ........................................................................................................... 19 孔型設(shè)計(jì)的要求與基本原則 ...................................................................................... 19 孔型系統(tǒng)的選擇 .......................................................................................................... 19 箱形孔型系統(tǒng) ................................................................................................... 19 橢圓－圓孔型系統(tǒng) ........................................................................................... 20 典型產(chǎn)品 φ14圓鋼的孔型設(shè)計(jì) .................................................................................. 20 分配延伸系數(shù) ................................................................................................... 20 軋制各道次面積的確定 ................................................................................... 22 各道次軋件尺寸及孔型尺寸計(jì)算 ................................................................... 22 配輥 .............................................................................................................................. 29 孔型沿輥身長(zhǎng)度方向的配置 ........................................................................... 29 孔型在軋制面垂直方向的配置 ....................................................................... 29 5 軋制節(jié)奏圖表與產(chǎn)量計(jì)算 ................................................................................................... 31 咬入角的計(jì)算 .............................................................................................................. 31 河北理工大學(xué) 畢業(yè)設(shè)計(jì)說(shuō)明書 目錄 IV 前滑值的計(jì)算 .............................................................................................................. 32 軋輥的線速度、轉(zhuǎn)速及電機(jī)轉(zhuǎn)速確定 ...................................................................... 33 軋制節(jié)奏圖表 .............................................................................................................. 34 軋制間隙時(shí)間 ................................................................................................... 35 軋制節(jié)奏時(shí)間 ................................................................................................... 36 軋制總延續(xù)時(shí)間 ............................................................................................... 36 軋鋼機(jī)產(chǎn)量計(jì)算 ...........................................................